When bitten by a snake, it usually shows symptoms within 24 hours. How long does it take to determine that it is okay, it is recommended that you do not judge on your own, it is best to go to the hospital to determine whether you have been bitten by a venomous or non-venomous snake under the systematic examination to ensure that you get the right treatment and avoid aggravation of the injury. 1. Venomous snake bites: The human body will have a local or systemic reaction in a few minutes or ten minutes, the local wound will feel numbness and swelling, the toxicity will circulate with the blood in the body, the human body will have vomiting, nausea, difficulty in swallowing, difficulty in breathing and other symptoms, and the seriousness of the situation may be life-threatening. 2. Non-venomous snake bites: Generally speaking, in addition to the slight stinging pain at the wound, accompanied by blisters and ulceration and other symptoms that may occur, the human body does not have other overreactions. After being bitten by a snake, the wound should be cleaned immediately, disinfected with iodine to prevent infection, and at the same time go to the hospital in a timely manner, under the guidance of the doctor for examination, symptomatic treatment measures to ensure that the snake venom damage to the nervous system can be restored to normal as soon as possible.